Luna 20
Space mission
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Luna 20 was the second of three successful Soviet lunar sample return missions. It was flown as part of the Luna program as a robotic competitor to the six successful Apollo lunar sample return missions.
Luna 20 was placed in an intermediate Earth... Wikipedia
Dates: Feb 14, 1972 – Feb 25, 1972
Dry mass: 5,600 kilograms (12,300 lb)
Mission duration: 11 days (day of launch to day of landing)
Rocket: Proton-K/D
Sample mass: 55 grams